86 citations · 275 across the 24 of their papers we have counts for
6 papers · 1 filter
Coisotropic Triples, Reduction and Classical Limit
Marvin Dippell, Chiara Esposito, Stefan Waldmann
Coisotropic reduction from Poisson geometry and deformation quantization is cast into a general and unifying algebraic framework: we introduce the notion of coisotropic triples of…
A proof of Tsygan's formality conjecture for Hamiltonian actions
Chiara Esposito, Niek de Kleijn, Jonas Schnitzer
In this short note we prove an equivariant version of the formality of multidiffirential operators for a proper Lie group action. More precisely, we show that the equivariant Hochs…
Two-dimensional topological quantum walks in the momentum space of structured light
Alessio D'Errico, Filippo Cardano, Maria Maffei +7
Quantum walks are powerful tools for quantum applications and for designing topological systems. Although they are simulated in a variety of platforms, genuine two-dimensional real…
Comparison and Continuity of Wick-type Star Products on certain coadjoint orbits
Chiara Esposito, Philipp Schmitt, Stefan Waldmann
In this paper we discuss continuity properties of the Wick-type star product on the 2-sphere, interpreted as a coadjoint orbit. Star products on coadjoint orbits in general have be…
Quantization of Hamiltonian coactions via twist
Pierre Bieliavsky, Chiara Esposito, Ryszard Nest
In this paper we introduce a notion of quantum Hamiltonian (co)action of Hopf algebras endowed with Drinfel'd twist structure (resp., 2-cocycles). First, we define a classical Hami…
-resolutions and twisting in the curved context
Chiara Esposito, Niek de Kleijn
In this short note we describe an alternative global version of the twisting procedure used by Dolgushev to prove formality theorems. This allows us to describe the maps of Fedosov…